This vacuum blood collection tube uses EDTAK2 as anticoaulant, and is widely used in clinical blood test as well as various kinds of blood cell test instruments. EDTAK2 density: ISO4822 first version Color: purple Anticoaulant status: liquid, dry powder, two phase agent Stopper hardness: 38A Normal specification: 13x50 13x60 13x75 Designed collection volume: 13x50: 0.5ml 1ml 2ml 13x60: 0.5ml 1ml 2ml 3ml 13x75: 0.5ml 1ml 2ml 3ml 4ml Shaking: up-side-down shake 5 times Vertical static pressure: 16kg/cm2 Operation temperature: 0 - 37 Applicable absolute altitude: see the package box Applicable altitude tolerence: 200 m Vaccum deviation: 10% If the stopper needs to be removed under special circumstance, it shall be operated by the assisstance of the company staff or after training.